JBL ProFlora CO2 Count Safe 2

Bubble counter with backflow stop.

Key Features:
• To adjust the CO2 level: bubble counter with backflow stop for the exact dosing of the CO2 supply in the aquarium.
• Fill bubble counter with water, connect with hose to CO2 system and diffuser, fix outside the aquarium with 2 suction cups on the glass or 2 screws on the furniture.
• Easy bubble check: CO2 bubbles are visible and countable, no backflow thanks to check valve, for all common CO2 systems.
• Reliable hose screw connection prevents accidental loosening of the hoses.